Mold for casting stench-traps



(No Model.) 2 Sheets-Sheefi 1.

E. H. MURDOOK.

MOLD FOR CASTING STENGH TRAPS.

No. 334,033. Patented Jan. 12', 1886.

' was FIG-3 N. PETERS. Phnlohllwgmphcn Washingion. D. C.

FIG

flrarss tlmrs MOLD FOR CASTING STENCH-TRAPS.

SPECIFICATION forming part of Letters Patent No. 334,033, dated January 12, 1886',

Application filed January 24, 1835. Serial No. 15 ,816.. (No model.) 7

To all whom it may concern:

Be it known that I, EDWIN H. MURDOOK, a citizen of the United States, residing at Gincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvements in Stench-Traps, of which the following is a specification, reference being had therein to the accompanying drawings.

My invention comprises a novel apparatus for casting such stench-traps as include three chambers or tubes and a pair of communicat- 3 is a similar plan, but showing the trap cast around the core-bars,said trap being sectioned. Fig. 4 is a front elevation of the closed flask. Fig. 5 is a transverse section of the same, the flask being arranged to admit the molten metal. Fig. 6 is an enlarged plan of a three-part core-bar, the handle thereof being shown in its normal position. Fig. 7 is asimilar plan, but showing said handle turned up to initiate the withdrawal of the central member of said core-bar. Fig. 8 is a plan showing this central member more fully withdrawn from its side pieces. Fig. 9 is a side elevation of the central member. Fig. 10 is a similar elevation of one of the side pieces of the three-part core-bar. Fig. 11 is an enlarged end elevation of said core-bar. Fig. 12 is a plan of a two-part core-bar. Fig. 13 is a modification thereof. Fig. 14 is an axial section of the cast trap. Fig. 15 is a modification of the same.

Referring to Fig. 1, A represents the lower member of a flask or mold, which is preferably of metal, and has hinged to it at a the upper member or lid, B, the member A being furnished with perforated flanges a, wherewith said flask is securely mounted upon a tableorbench. Furthermore,thislower memher, A, has three molds or matrices, O D E,

joined by channels F G, said matrices and channels being exactly duplicated in the lid. B, as at O D E F G.

c d e are gates leading into the matrices of said lid, which lid has a handle, I), and a pair of pins, b I), over which latter are engaged the hooks h h ofa sliding locking-piece, H, (seen in Fig. 4,) said locking-piece being applied to the body A of the flask.

Adapted to fit snugly within the central matrix, D, is a sectional core-bar composed of their inner than at their outer ends, as seen' in Fig. 9, in order that the central member,I,

-may be readily withdrawn from between the side pieces, J K, after said member I has been started. The outer end of said member has pivoted to it a pair of cams, L L, operatedby a common handle, Z, said cams being adapted to bear against the ends of the side pieces, J K. Projecting laterally from the side piece K is a stop, N, that limits the entrance into the mold of the three-part core-bar I J K. Projecting laterally from the reduced portion 7a of side piece K is a stump, O, that occupies about oneha-lf of the channel F, said stump being supplemented by a similar device, P, of the reduced portion j of the other side piece, J. This stump P occupies about one-half of the channel G.

Adapted to fit into the front matrix, C, is a core-bar composed of two sections, R S, having respectively reduced portions 1' s, the member It being provided with a stump, T, that enters the channel F and bears against the face of the stump O. Pivoted to the member S is a cam, U, that bears against the outer end of the section B, said cam being operated by a handle, a. V is a stop for this two-part core-bar R r S s.

Adapted to fit into the rear matrix, F, is a sectional core-bar, composed of two members, IV and X, having respectively reduced portions to w, the memberX being provided with a stump, Y, that enters the channel G and bears against the face of the stump P. Pivoted to the member XV is a cam, Z, that bears against the outer end of the section X, said cam being operated by the handle z. Q is a stop for this two-part core-bar W to X x.

In Fig. 5 is seen a hopper, 1, adapted to rest on top of the closed flask A B, said hopper being provided with a pair of handles, 2 and 3, the latter being perforated at 4 to admit a pin, 5, that projects vertically from a lug, 6, at the rear of the lid B.

In Fig. 13 is seen a screw, 7, for initiating the retraction of the sectional core-bars.

The method of casting a stench-trap with the above-described appliances is as follows: Thehinged flask A B is first thrown wide open, as seen in Fig. 1, and the united corebars R S, I J K, and \V X are placed respectively in the matrices O, D, and E of the lower member, A, of said flask, the pins V, N, and Q limiting the entrance of said bars. When thus inserted, the fac s of the stumps P Y and O T bear against each other, and the space afforded around the reduced portions of the corebars affords room for the moltenmetal or other material to flow in, and thereby form the cast stenclrtrap. In Fig. 2 this space for the casting has been shown perfectly black, so as to render it more conspicuous. The lid B of the flask is now closed and fastened by advancing the lockingpiece H,and causing its hooked ends it h to engage over the pins 1) b, as seen in Fig. 4, after which act the hopper 1 is mounted on said closed flask, as represented in Fig. 5. The proper charge of molten metal is then poured into the hopper and runs down the gates dd 0 into the matrices O O, D D", and E E,thereby forming the trap, as indicated by the section-lines in Fig. 3. After the metal has hardened sufficiently, the operator grasps the handles 2 and 3 and swings the hopper laterally across the top of the mold and in close contact with the same, the pin 5 serving as a fulcrum to permit this movement to take place. By this means any surplus metal that might project above the gates c d e is readily cut off. The hopper is then removed, and the next operation consists in withdrawing the various core-bars from their respective matrices. Now, as the metal contracts in cooling, and as the bars have lateral stumps firmly embtdded or anchored in the metal, it is evident said bars cannot be drawn directly out of the molds; hence it becomes necessary to remove them in sections. The free end of handle Z is accordingly turned up, as seen in Fig. 7 and indicated by the arrow in Fig. 4, which movement of said handle causes its pair of cams L L to bear, respectively, against the outer ends of the side pieces, J K, and as the latter cannot advance farther into the molds,

it is evident that the .central section, I, must retract a slight distance. This initiatory re traction, however, is sufficient to free the central section from contact with the side pieces, J K. and allow said section I to be readily pulled out of the mold, thereby affording ample space for the liberation of said side pieces. The other sectional core bars, It S and W X, are then removed in a precisely similar manner, after which act the locking-piece H is retracted, the flask opened, and the finished trap is taken out of the same.

Reference to Fig. 14 shows that this east trap has a receiving-pipe, c, that was formed in the mold C O, a central chamber, d, that was formed in the mold D D, and adischarge pipe, 6, that was formed in the mold E E. Furthermore, thelower end of pipe 0 isjoined to the central chamber, (1, by a passage, f, that was formed in the channel F F, while said chamber has at its upper end another passage or water way, g, that communicates with the discharge-pipe e, which passage 9 was formed in the channel G G. It will also be noticed that the chamber (1 is open at bottom, which opening is provided for the reception of an ordinary trap-screw, the disengagement of which latter permits the ready removal of any sediment or obstructions that might enter the trap.

In order to affordavery secure engagement of the trap-screw, the lower end of chamber (1 may be prolonged below the inlet-pipe c, as indicated by the dotted lines in Fig. 14, and more clearly seen in Fig. 15, which latter illustration shows that the discharge-pipe 0 may branch off laterally from the top of the aforesaid central chamber, d.

\Vhichever construction may'be adopted, or whatever material may be employed, it is apparent that the three chambers of the trap are all cast in one piece, thereby insuring the utmost uniformity of manufacture and obviating the expense and danger of solder or other joints.

I claim as my invention- An apparatus for casting stench'traps having three communicating chambers, which apparatus includes a divided mold furnished with three matrices, each matrix havinga sectional core-bar titted therein, and said corebars being provided with lateral stumps that form the passages between said chambers, in the manner herein described.

In testimony whereof I affix my signature in presence of two witnesses.

EDWIN H. MURDOOK.

Witnesses:

JAMES H. LAYMAN, S. S. CARPENTER.

IIO 

